2010

Finite Number Density Corrections to Leptogenesis

Beneke, Martin, Garbrecht, Bjorn, Herranen, Matti et al.

Understand

We derive and solve kinetic equations for leptogenesis within the Closed Time Path (CTP) formalism.

It is particularly emphasised how the procedure of real intermediate state subtraction familiar from the Boltzmann approach is realised within the CTP framework; and we show how in time-independent situations, no lepton asymmetry emerges, in accordance with the CPT-theorem.
The CTP approach provides new quantum statistical corrections from evaluating the loop integrals.
These lead to an enhancement of the asymmetry that is originating from the Bose statistics of the Higgs particles.

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Then

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